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Two atomic particles approach each other in a head-on collision. Each particle has a mass of 1.69 x 10-25 kilogram. The speed of each particle is 2.07 x 108 meter per second when measured by an observer standing in the laboratory.
(a) Find the speed of one particle as seen by other particle?
(b) Compute the relativistic momentum of one particle, as it would be observed by the other.
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